106941781 has 4 divisors (see below), whose sum is σ = 113232492. Its totient is φ = 100651072.

The previous prime is 106941773. The next prime is 106941787. The reversal of 106941781 is 187149601.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 187149601 = 19 ⋅9849979.

It can be written as a sum of positive squares in 2 ways, for example, as 40844881 + 66096900 = 6391^2 + 8130^2 .

It is a cyclic number.

It is not a de Polignac number, because 106941781 - 2³ = 106941773 is a prime.

It is a super-3 number, since 3×106941781³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 106941781.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (106941787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3145330 + ... + 3145363.

It is an arithmetic number, because the mean of its divisors is an integer number (28308123).

Almost surely, 2^106941781 is an apocalyptic number.

It is an amenable number.

106941781 is a deficient number, since it is larger than the sum of its proper divisors (6290711).

106941781 is an equidigital number, since it uses as much as digits as its factorization.

106941781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6290710.

The product of its (nonzero) digits is 12096, while the sum is 37.

The square root of 106941781 is about 10341.2659283088. The cubic root of 106941781 is about 474.6598206989.

The spelling of 106941781 in words is "one hundred six million, nine hundred forty-one thousand, seven hundred eighty-one".